Diaper for pet

ABSTRACT

A pet diaper extends in a lateral direction along a waist of a pet and in a longitudinal direction from a ventral side to a dorsal side of the pet, the lateral direction being orthogonal to the longitudinal direction, and the pet diaper includes: a main body including: an absorbent core; and a tail hole having a longitudinally elongated shape with a largest opening width in the longitudinal direction that is larger than a largest opening width in the lateral direction; a pair of fastening tabs, disposed closer to the ventral side than is the tail hole, that extend outward from a lateral side edge of the main body; and a target portion, disposed closer to the dorsal side than is the tail hole, that engages with the pair of fastening tabs.

BACKGROUND Technical Field

The present disclosure relates to a pet diaper.

Description of Related Art

Patent Literature 1 discloses a pet diaper to be worn by a pet such as a dog or a cat. The pet diaper disclosed in Patent Literature 1 includes a diaper main body in which a tail hole allowing feces excreted by a pet to pass therethrough is formed in a rump contact portion covering the rump of the pet, and a feces bag which collects feces passing through the tail hole. This pet diaper prevents feces from adhering to fur or the like of a pet by absorbing urine with a water absorbent of the diaper main body and collecting feces in the feces bag.

-   [Patent Literature 1] Japanese Patent No. 6232688

The tail hole formed in the pet diaper of Patent Literature 1 needs to be maintained at a position facing the anus of a pet in order for feces to be discharged therethrough. However, for example, if a pet strenuously moves during a walk, displacement of the pet diaper may occur, and accordingly, a position of the tail hole may be displaced with respect to a position of the anus of the pet. If displacement of the position of the tail hole occurs, there is concern that excreted feces may enter the inside of the pet diaper and adhere to the pet. In order for feces to reliably pass through the tail hole, it is conceivable to increase dimensions of the tail hole to be formed in the pet diaper. However, if the dimensions of the tail hole are excessively increased, there is concern that urine may leak through the tail hole.

SUMMARY

Hence, one or more embodiments of the present invention provide a pet diaper in which feces can be discharged to the outside while leakage of urine is prevented.

A pet diaper according to an aspect extends in a lateral direction along a waist of a pet and in a longitudinal direction from a ventral side to a dorsal side of the pet. The lateral direction is orthogonal to the longitudinal direction. The pet diaper includes a main body including an absorbent core; and a tail hole having a longitudinally elongated shape with a largest opening width in the longitudinal direction that is larger than a largest opening width in the lateral direction. The pet diaper further includes a pair of fastening tabs, disposed closer to the ventral side than is the tail hole, that extend outward from a lateral side edge of the main body and a target portion, disposed closer to the dorsal side than is the tail hole, that engages with the pair of fastening tabs. A dorsal side edge of the tail hole is disposed closer to the ventral side than is a middle point between a center line of the main body in the longitudinal direction and a ventral side edge of the target portion.

In the pet diaper according to the foregoing aspect, since the tail hole has a longitudinally elongated shape, the anus of the pet can be exposed from the main body at the time of excretion. In addition, by disposing the edge of the tail hole on the dorsal side on the ventral side from the middle point between the center line of the main body in the longitudinal direction and the edge of the target portion on the ventral side, the edge of the tail hole on the dorsal side can reliably abut a dorsal portion of the tail when the pet diaper is worn. Therefore, displacement of the pet diaper can be suppressed, and feces can be discharged to the outside of the pet diaper while leakage of urine is prevented.

In one aspect, the largest opening width of the tail hole in the longitudinal direction may be larger than a distance between a ventral side edge of the tail hole and the center line of the main body in the longitudinal direction. In this aspect, since the largest opening width of the tail hole in the longitudinal direction is formed relatively long, the anus of the pet can be reliably exposed from the main body, and thus feces can be discharged to the outside.

In one aspect, the largest opening width of the tail hole in the longitudinal direction may be larger than a distance between the dorsal side edge of the tail hole and the middle point. In this aspect, since the largest opening width of the tail hole in the longitudinal direction is formed relatively long, the anus of the pet can be reliably exposed from the main body, and thus feces can be discharged to the outside of the pet diaper.

In one aspect, the distance between the edge of the tail hole on the ventral side and the center line of the main body in the longitudinal direction may be shorter than the distance in the longitudinal direction between the dorsal side edge of the tail hole and the middle point. When the distance between the edge of the tail hole on the dorsal side and the middle point in the longitudinal direction is short, there is a need to shorten a length of a region in the main body on the ventral side in order for the pair of fastening tabs to be engaged with the target portion. However, if the length of a region in the main body on the ventral side is shortened, there is concern that a urination opening of the pet may be exposed and leakage of urine may occur. In contrast, according to the present aspect, since the distance between the edge of the tail hole on the dorsal side and the middle point in the longitudinal direction is formed relatively long, the length of a region in the main body on the ventral side can be secured. As a result, leakage of urine can be suppressed.

In one aspect, a ventral side edge of the tail hole may be disposed closer to the ventral side than is the center line of the main body in the longitudinal direction. Since the tail hole is disposed substantially in a horizontal manner when the pet adopts a sitting posture by disposing the edge of the tail hole on the ventral side on the ventral side from the center line of the main body in the longitudinal direction, feces can more reliably pass therethrough.

In one aspect, the main body may further include a tongue piece configured to cover or uncover the tail hole. The tongue piece may include: a base end portion coupled to the dorsal side edge of the tail hole, and a distal end portion opposite to the base end portion. The tongue piece may uncover the tail hole when folded back with the base end portion as a starting point (or a fold line). The distal end portion of the tongue piece may be directed to the ventral side or in the lateral direction when the tongue piece is not folded back. In this aspect, since the tongue piece is not disposed below the anus of the pet when the tongue piece is folded back with the base end portion as a starting point, adhesion of feces to the pet diaper at the time of excretion can be suppressed. In one aspect, the tail hole may be formed by cutting out a part of the main body.

In one aspect, a dorsal side edge of the absorbent core may be disposed closer to the ventral side than is a ventral side edge of the tail hole. In this aspect, regions in which the absorbent core is not disposed are formed on both sides of the tail hole in the lateral direction and the dorsal side. These regions are flexibly deformed along the rump of the pet due to a reduced rigidity corresponding to that of the absorbent core. Therefore, fitting properties of the pet diaper are improved, and a gap is unlikely to be formed between the edge of the tail hole and the rump of the pet. Thus, entry of feces into the pet diaper through the gap is suppressed.

In one aspect, a distance between a ventral side edge of the tail hole and the dorsal side edge of the absorbent core may be shorter than a distance between the dorsal side edge of the absorbent core and the center line of the main body in the longitudinal direction. In this aspect, since the edge of the absorbent core on the dorsal side is disposed at a position close to the edge of the tail hole on the ventral side, leakage of urine through the tail hole can be suppressed.

In one aspect, the pet diaper may further include an elastic member (i.e., an elastic string or a first elastic string) attached to the main body in a stretched state and extending at least from a ventral side edge of the tail hole to an dorsal side edge of the absorbent core in the longitudinal direction. In this aspect, since the elastic member extends between at least the edge of the tail hole on the ventral side and the edge of the absorbent core on the dorsal side, a region between the tail hole and the absorbent core in the main body is pulled to the absorbent core side due to elasticity of the elastic member and is pressed against the rump of the pet. Accordingly, fitting properties of the pet diaper are improved, and a gap is unlikely to be formed between the edge of the tail hole and the rump of the pet. Therefore, feces are unlikely to enter the inside of the pet diaper, and thus feces are unlikely to adhere to the pet.

In one aspect, the pet diaper may further include a leakproof gather disposed at a position outside the absorbent core in the lateral direction. The elastic member is disposed at a position outside the leakproof gather in the lateral direction. In this aspect, since the elastic member is disposed at a position outside the leakproof gather in the lateral direction, the side edge of the main body in the lateral direction can be disposed around the legs of the pet in a tight contact manner. Therefore, fitting properties of the pet diaper can be further improved.

In one aspect, the leakproof gather may comprises: a second elastic member (i.e., a second elastic string) extending in the longitudinal direction; a standing portion standing upright by contraction of the second elastic member; and a vertical fixed portion serving as a standing fulcrum of the standing portion in the longitudinal direction. The vertical fixed portion may be fixed to the main body at a position between the ventral side edge of the tail hole and the dorsal side edge of the absorbent core. In this aspect, since the standing portion of the leakproof gather is disposed in a state of standing upright at a position on the outward side in the lateral direction from the absorbent core, leakage of urine can be suppressed.

In one aspect, an opening width of the tail hole in the lateral direction may continuously narrow toward the ventral side. Since a width of the anus at the time of defecation is larger than a width of feces, feces can pass therethrough while having a small opening area of the tail hole by causing the width of the tail hole in the lateral direction to narrow toward the ventral side. In addition, leakage of urine through the tail hole can be suppressed by having a small opening area of the tail hole.

According to various aspects of the present invention, feces can be discharged to the outside while leakage of urine is prevented.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a plan view illustrating a pet diaper according to one or more embodiments.

FIG. 2 is a cross-sectional view schematically illustrating the pet diaper along line A-A in FIG. 1 .

FIG. 3 is a view illustrating a state where the pet diaper is worn.

FIG. 4 is a view illustrating a modification example of a tail hole.

FIG. 5 is a view illustrating another modification example of the tail hole.

FIG. 6 is a plan view illustrating the pet diaper according to one or more embodiments.

FIG. 7 is a plan view illustrating the pet diaper according to one or more embodiments.

FIG. 8 is a plan view illustrating the pet diaper according to one or more embodiments.

FIG. 9 is a plan view illustrating the pet diaper according to one or more embodiments.

FIG. 10 is a plan view illustrating the pet diaper according to one or more embodiments.

FIG. 11 is a plan view illustrating the pet diaper according to one or more embodiments.

FIG. 12 is a plan view illustrating the pet diaper according to one or more embodiments.

FIG. 13 is a plan view illustrating the pet diaper according to one or more embodiments.

DETAILED DESCRIPTION OF EMBODIMENTS

Hereinafter, with reference to the drawings, embodiments of the present disclosure will be described. In the following description, the same reference signs are applied to elements which are the same or corresponding, and duplicate description thereof will not be repeated. Dimensional ratios of the drawings do not necessarily coincide with those in the description.

FIG. 1 is a plan view of a pet diaper according to one or more embodiments viewed from a front surface side Z1. FIG. 2 is a cross-sectional view schematically illustrating the pet diaper along line A-A indicated in FIG. 1 . FIGS. 1 and 2 illustrate a pet diaper 1 in a stretched state where the pet diaper 1 is stretched to a state where no creases are formed. In the following description, a positional relationship in a stretched state will be described unless otherwise specified. In addition, in the cross-sectional view illustrated in FIG. 2 , for the sake of convenience of description, the members are illustrated with a space therebetween in a thickness direction Z, but they are in contact with each other in the thickness direction Z in an actual product.

The pet diaper 1 is a diaper used for a pet. In this specification, “a pet” extensively includes vertebrates and invertebrates and typically includes pet animals such as a dog, a cat, a rabbit, and a hamster. The pet diaper 1 of one or more embodiments is a diaper for a dog or a cat. This pet diaper 1 is favorably utilized at the time of a walk of a pet. As illustrated in FIG. 1 , the pet diaper 1 extends in a lateral direction X disposed in a girth direction of a pet and in a longitudinal direction Y orthogonal to the lateral direction X. The longitudinal direction Y is a direction in which a ventral side of a pet is connected to a dorsal side thereof. The thickness direction Z is a direction orthogonal to the lateral direction X and the longitudinal direction Y and includes the front surface side Z1 brought into contact with a pet in a worn state and a rear surface side Z2 directed to an outward side in a worn state. As illustrated in FIG. 3 , the pet diaper according to one or more embodiments is worn such that a pet is covered from the ventral side to the dorsal side through the crotch.

The pet diaper 1 has a main body 2. The main body 2 includes at least a top sheet 10, a back sheet 20, and an absorbent core 30. The top sheet 10 constitutes a surface brought into contact with a pet in the main body 2 and is disposed on the front surface side Z1. The top sheet 10 has liquid permeability allowing a body fluid to permeate it to the absorbent core 30 side. The top sheet 10 includes a center sheet 11 positioned at the center in the longitudinal direction Y and covering the absorbent core 30, and side sheets 12 covering both side portions of the center sheet 11 in the lateral direction X. As illustrated in FIG. 2 , inward parts of the side sheets 12 in the lateral direction X are folded back to the rear surface side Z2. Elastic members (second elastic members or second elastic strings) 13 in a state of being stretched in the longitudinal direction Y are disposed between the folded-back side sheets 12. The side sheets 12 and the elastic members 13 constitute leakproof gathers 80. The leakproof gathers 80 are orthostatic leakproof gathers and are disposed on the front surface side Z1 from the absorbent core 30. Details of the leakproof gathers 80 will be described below.

The back sheet 20 constitutes a surface positioned on the outward side in the main body 2 when worn and is disposed on the rear surface side Z2. The back sheet 20 includes a liquid-impermeable rear surface film 21 and a rear surface non-woven fabric 22 positioned on the rear surface side Z2 from the rear surface film 21. In one or more embodiments, the rear surface non-woven fabric 22 may be disposed on the front surface side Z1 from the rear surface film 21. A length of the rear surface film 21 in the lateral direction X may be formed to be shorter than a length of the rear surface non-woven fabric 22 in the lateral direction X, and the rear surface non-woven fabric 22 may extend to both sides in the lateral direction X from the rear surface film 21.

The absorbent core 30 is disposed between the top sheet 10 and the back sheet 20. For example, the absorbent core 30 includes plant-derived pulp and a super absorbent polymer (SAP) and absorbs urine of a pet, for example. As illustrated in FIG. 2 , an upper surface and a lower surface of the absorbent core 30 may be covered by a core wrap 32. The absorbent core 30 is disposed substantially at the center of the main body 2 in the lateral direction X. A width of the absorbent core 30 in the lateral direction X is shorter than a width of the main body 2 in the lateral direction X. In addition, the width of the absorbent core 30 in the lateral direction X may partially narrow at a position between an edge 30R of the absorbent core 30 on the dorsal side and an edge 30F of the absorbent core 30 on the ventral side.

The edge 30R of the absorbent core 30 on the dorsal side is disposed on the dorsal side from a center line CL2 of the main body 2 in the longitudinal direction Y. The edge 30F of the absorbent core 30 on the ventral side is disposed on the dorsal side from a ventral side edge 2F, which will be described below. That is, a length of the absorbent core 30 in the longitudinal direction Y is shorter than a length of the main body 2 in the longitudinal direction Y. In addition, the edge (dorsal side edge) 30R of the absorbent core 30 on the dorsal side is disposed closer to the ventral side than is an edge (ventral side edge) 70F of a tail hole 70 on the ventral side, which will be described below.

The main body 2 has a dorsal side edge 2R positioned on the dorsal side in the longitudinal direction Y, and the ventral side edge 2F positioned on the ventral side in the longitudinal direction Y. The dorsal side edge 2R is disposed on the dorsal side in the girth direction of a pet when worn, and the ventral side edge 2F is disposed on the ventral side in the girth direction of a pet when worn. In addition, the main body 2 has a dorsal side area 51 positioned on the dorsal side edge 2R side, a ventral side area 52 positioned on the ventral side edge 2F side, and an intermediate area 53 positioned between the dorsal side area 51 and the ventral side area 52 in the longitudinal direction Y. A pair of extending portions 14 protruding to the outward side in the lateral direction X from the main body 2 are formed in the dorsal side area 51 of the main body 2. A pair of extending portions 15 protruding to the outward side in the lateral direction X from the main body 2 are formed in the ventral side area 52 of the main body 2. The pair of extending portions 15 define a pair of leg opening portions for allowing the hind legs of a pet to pass therethrough.

A pair of fastening tabs 90 are respectively provided in the pair of extending portions 15. The pair of fastening tabs 90 extend outward in the lateral direction X from lateral side edges of the main body 2, in the vicinity of the ventral side edge 2F of the main body 2 in the longitudinal direction Y. The pair of fastening tabs 90 may respectively have base material sheets 91 joined to the extending portions 15, and joint portions 92 provided on the base material sheets 91. The joint portions 92 are disposed on surfaces of the fastening tabs 90 on the front surface side Z1. For example, the joint portions 92 are mechanical fasteners, which are constituted to be able to be joined to a target portion 45 formed on the rear surface side Z2 of the main body 2. The pair of fastening tabs 90 are disposed closer to the ventral side than is the tail hole 70 (which will be described below), and the target portion 45 is disposed closer to the dorsal side than is the tail hole 70. In one or more embodiments, the main body 2 may not include the target portion 45, and the joint portions 92 of the pair of fastening tabs 90 may be constituted to be directly joined to the rear surface side Z2 of the back sheet 20.

In addition, a waist gather 93 stretchable in the lateral direction X may be provided in the vicinity of the ventral side edge 2F of the main body 2. For example, the waist gather 93 is disposed on the ventral side from edges 90R of the pair of fastening tabs 90 on the dorsal side and brings the ventral side area 52 into tight contact with the ventral portion of a pet by being stretched in the lateral direction.

The tail hole 70 is formed in the main body 2. For example, the tail hole 70 is an opening portion having substantially a tongue shape formed in the main body 2 by making a cut having substantially a U-shape opening on the dorsal side of the main body 2. The tail hole 70 is utilized as an excretion hole through which the tail of a pet can be inserted and feces of a pet can pass. The tail hole 70 has a longitudinally elongated shape in which a largest opening width W2 in the longitudinal direction Y is larger than a largest opening width W1 in the lateral direction X. The largest opening width W1 of the tail hole 70 in the lateral direction X is designed to be larger than a width of an anus 98 of a pet (refer to FIG. 3 ). In one or more embodiments, an opening width of the tail hole 70 in the lateral direction X may continuously narrow toward the ventral side.

In the embodiments illustrated in FIG. 1 , an edge (dorsal side edge) 70R of the tail hole on the dorsal side and the edge (ventral side edge) 70F of the tail hole 70 on the ventral side are disposed closer to the dorsal side than is the center line CL2 of the main body 2 in the longitudinal direction Y. The center line CL2 is a virtual line positioned at an equal distance from the dorsal side edge 2R and the ventral side edge 2F and extending in the lateral direction X. That is, the center line CL2 is a part in which a folded line is formed when the pet diaper 1 is folded in half in the longitudinal direction Y, and a region on the ventral side from the center line CL2 of the main body 2 is brought into contact with an urination opening of a pet when the pet wears the pet diaper 1.

As illustrated in FIG. 1 , the edge (dorsal side edge) 70R of the tail hole 70 on the dorsal side is disposed closer to the ventral side than is a middle point MP between the center line CL2 of the main body 2 and an edge (ventral side edge) 45F of the target portion 45 on the ventral side in the longitudinal direction Y. In one or more embodiments, the largest opening width W2 of the tail hole 70 in the longitudinal direction Y may be larger than a distance D1 between the edge 70F of the tail hole 70 on the ventral side and the center line CL2 of the main body 2 in the longitudinal direction Y. In addition, the largest opening width W2 of the tail hole 70 in the longitudinal direction Y may be larger than a distance D2 between the edge 70R of the tail hole on the dorsal side and the middle point MP. Specifically, the largest opening width W2 of the tail hole 70 in the longitudinal direction Y may be 35 mm to 80 mm and may be more preferably 40 mm to 80 mm. Moreover, the distance D1 between the edge 70F of the tail hole on the ventral side and the center line CL2 of the main body 2 in the longitudinal direction Y may be shorter than the distance D2 between the edge 70R of the tail hole 70 on the dorsal side and the middle point MP.

In addition, the edge 70F of the tail hole 70 on the ventral side is formed on the dorsal side from the edge 70R of the absorbent core 30 on the dorsal side. Therefore, regions in which the absorbent core 30 is not disposed are formed on the outward side of the tail hole 70 of the main body 2 in the lateral direction X and the dorsal side of the tail hole 70 of the main body 2. In one or more embodiments, a distance D3 between the edge (ventral side edge) 70F of the tail hole 70 on the ventral side and the edge (dorsal side edge) 70R of the absorbent core 30 on the dorsal side may be shorter than a distance D4 between the edge (dorsal side edge) 30R of the absorbent core 30 on the dorsal side and the center line CL2 of the main body 2 in the longitudinal direction Y. That is, the edge 30R of the absorbent core 30 on the dorsal side is disposed at a position close to the edge 70F of the tail hole 70 on the ventral side.

The tail hole 70 is formed on a center line CL1 of the main body 2 in the lateral direction X. The center line CL1 is a virtual line positioned at an equal distance from a pair of side edges 2S of the main body 2 in the lateral direction X and extending in the longitudinal direction Y. In one or more embodiments, the largest opening width W1 of the tail hole 70 in the lateral direction X may be smaller than a distance D5 between the center line CL1 of the main body 2 in the lateral direction X and inner edges 80S of the leakproof gathers 80 in the lateral direction X. In addition, a distance D6 between the edge 70R of the tail hole 70 on the dorsal side and the edge 30R of the absorbent core 30 on the dorsal side in the longitudinal direction Y may be longer than a distance D7 between a side edge 70S of the tail hole 70 in the lateral direction X and elastic members 40, which will be described below. The tail hole 70 is not limited to having substantially a tongue shape and may have a semicircular shape, a rectangular shape, a trapezoidal shape, a polygonal shape, or an elliptical shape.

A tongue piece 72 is formed in the main body 2. For example, the tongue piece 72 is a flap-shaped member which is formed by making a cut with respect to the main body 2 and is constituted of a part of the top sheet 10 and the back sheet 20, for example. The tongue piece 72 has a shape that substantially coincides with an opening shape of the tail hole 70 and is disposed in a manner of overlapping (covering/uncovering) the tail hole 70. The tongue piece 72 has a base end portion 72R coupled to the edge 70R of the tail hole 70 on the dorsal side, a distal end portion 72F positioned on a side opposite to the base end portion 72R, and side portions 72S connecting the base end portion 72R and the distal end portion 72F to each other. The distal end portion 72F is connected to the intermediate area 53 of the main body 2. On the other hand, the distal end portion 72F and the side portions 72S are not connected to the intermediate area 53 of the main body 2 and are free. The distal end portion 72F of the tongue piece 72 is directed to the ventral side in a state where the tongue piece 72 is not folded back (a state of overlapping the tail hole 70).

As illustrated in FIG. 3 , the tongue piece 72 is constituted to open (uncover) the tail hole 70 when it is folded back to the rear surface side Z2 with the base end portion 72R as a starting point. As described above, since the distal end portion 72F of the tongue piece 72 is directed to the ventral side, the tail is inserted into the tail hole 70, and when the tongue piece 72 is folded back to the rear surface side Z2 with the base end portion 72R as a starting point, the tongue piece 72 abuts a dorsal surface side of the tail. Due to the tongue piece 72 disposed on the dorsal surface side of the tail, adhesion of feces to the tongue piece 72 at the time of excretion is suppressed. In one or more embodiments, the distal end portion 72F and the side portions 72S of the tongue piece 72 may be temporarily tacked to the intermediate area 53 of the main body 2 via a discontinuous cut, for example, a perforated line, and the distal end portion 72F and the side portions 72S may be freed from the intermediate area 53 of the main body 2 by tearing off the tongue piece 72 along the perforated line.

In addition, in one or more embodiments, as illustrated in FIG. 4 , the tongue piece 72 may be formed by making a cut having substantially a U-shape opening in the lateral direction X of the main body 2. The distal end portion 72F of the tongue piece 72 illustrated in FIG. 4 may be directed in the lateral direction X when the tongue piece 72 is in a state of not being folded back. In the embodiments illustrated in FIG. 4 , when the tail is inserted into the tail hole and the tongue piece 72 is folded back to the rear surface side Z2 with the base end portion 72R as a starting point, the tongue piece 72 abuts a side portion of the tail of a pet. In addition, in one or more embodiments, as illustrated in FIG. 5 , the tail hole 70 not having the tongue piece 72 may be formed by making a ring-shaped cut throughout the whole circumference of an edge of the tail hole 70 and cutting out a part of the main body 2. Even in the embodiments illustrated in FIGS. 4 and 5 , since the tongue piece 72 is not disposed below the anus 98 of a pet when the tail is inserted into the tail hole 70, adhesion of feces to the pet diaper 1 at the time of excretion is suppressed.

Next, the leakproof gathers 80 will be described in more detail. The leakproof gathers are disposed on the outward side of the absorbent core 30 in the lateral direction X and curb leakage of urine which has been excreted to the absorbent core 30 in the lateral direction X. In one or more embodiments, the leakproof gathers 80 each include the elastic member 13 extending in the longitudinal direction Y, a standing portion 81 standing upright due to contraction of the elastic member 13, a lateral fixed portion 82 serving as a standing fulcrum of the standing portion 81 in the lateral direction X, and a vertical fixed portion 83 serving as a standing fulcrum of the standing portion 81 in the longitudinal direction Y. The standing portion 81, the lateral fixed portion 82, and the vertical fixed portion 83 of the leakproof gather 80 are constituted of the side sheet 12. The standing portion 81 is a part of the side sheet 12 not connected to the center sheet 11, and the elastic member 13 in a stretched state is disposed in the standing portion 81.

The lateral fixed portion 82 is a part of the side sheet 12 fixed to the center sheet 11 on the outward side of the standing portion 81 in the lateral direction X and serves as the standing fulcrum of the standing portion 81 in the lateral direction X. The lateral fixed portion 82 may be formed in the entire area of the main body 2 in the longitudinal direction Y at a position on the outward side in the lateral direction X with respect to the standing portion 81.

The vertical fixed portion 83 is a part of the side sheet 12 fixed to the center sheet 11 on the outward side of the standing portion 81 in the longitudinal direction Y and serves as the standing fulcrum of the standing portion 81 in the longitudinal direction Y. In one or more embodiments, the vertical fixed portion 83 includes a first vertical fixed portion 83R and a second vertical fixed portion 83F. The first vertical fixed portion 83R is formed at a position on the inward side in the lateral direction X with respect to the lateral fixed portion 82, that is, a position on the dorsal side of the absorbent core 30. More specifically, an edge 831 of the first vertical fixed portion 83R on the ventral side is disposed at a position between the edge 70F of the tail hole 70 on the ventral side and the edge 30R of the absorbent core 30 on the dorsal side. The second vertical fixed portion 83F is formed at a position on the inward side in the lateral direction X with respect to the lateral fixed portion 82, that is, a position on the ventral side from the absorbent core 30. That is, the vertical fixed portion 83 is fixed to the main body 2 at a position on the outward side from the absorbent core 30 in the longitudinal direction Y.

As described above, the standing portion 81 is disposed on the inward side in the lateral direction X with respect to the lateral fixed portion 82 and the inward side in the longitudinal direction Y with respect to the vertical fixed portion 83. The elastic member 13 stretched in the longitudinal direction Y is connected to the standing portion 81, and the main body 2 is deformed in a closing direction due to contraction of the elastic member 13 in the longitudinal direction Y. Due to this deformation, the standing portion 81 stands upright with the lateral fixed portion 82 as a starting point. In this manner, the standing portions 81 prevent leakage of urine by standing upright at positions sandwiching the absorbent core 30 therebetween in the lateral direction X.

The pet diaper 1 further includes a pair of elastic members (first elastic members or first elastic strings) 40 which can be stretched in a length direction. As illustrated in FIG. 1 , the pair of elastic members 40 are disposed on the outward side in the lateral direction X from the elastic members 13 of the leakproof gathers 80. In the embodiments illustrated in FIG. 1 , the elastic members 40 extend in the entire area of the main body 2 in the longitudinal direction Y. The elastic members 40 are fixed to the main body 2 in a state of being stretched in the longitudinal direction Y, thereby applying a force causing the main body 2 to be deformed in the closing direction. For example, the pair of elastic members 40 are rubber threads or flat rubbers which can contract in the length direction and are disposed along side edges 2S of the main body 2 between the top sheet 10 and the back sheet 20 of the main body 2. The pair of elastic members may extend in the longitudinal direction Y in a state of sewed onto the top sheet 10 and the back sheet 20 of the main body 2.

In one or more embodiments, when the pet diaper 1 is in a stretched state, stretch ratios of the elastic members 40 may be higher than stretch ratios of the elastic members 13 of the leakproof gathers 80. A stretch ratio indicates a degree of elongation when natural lengths of the elastic members 40 or the elastic members 13 are 1. The natural lengths of the elastic members 40 or the elastic members 13 are lengths of the elastic members 40 or the elastic members 13 when no external force is applied thereto. For example, the stretch ratios of the elastic members 40 are obtained by (lengths of the elastic members 40 in a stretched state)/(lengths of the elastic members 40 in a natural state). Contractile forces of the elastic members 40 or the elastic members 13 increase as the stretch ratios are increased. By setting the stretch ratios of the elastic members 40 to be higher than the stretch ratios of the elastic members 13, the side edges 2S of the main body 2 can be brought into tight contact with a pet due to contractile forces of the elastic members 40, and occurrence of displacement in the pet diaper 1 can be suppressed even when a pet strenuously moves, for example.

In one or more embodiments, effective lengths of the elastic members 40 may be longer than effective lengths of the elastic members 13. An effective length is a length of a part of the elastic members 40 or the elastic members 13 which actually contracts. For example, in the embodiments illustrated in FIG. 1 , the effective lengths of the elastic members 40 coincide with the length of the main body 2 in the longitudinal direction Y, and the effective lengths of the elastic members 13 coincide with a distance between the edge of the first vertical fixed portion 83R on the ventral side and the edge of the second vertical fixed portion 83F on the dorsal side. By setting the effective lengths of the elastic members 40 to be longer than the effective lengths of the elastic members 13, fitting properties of the pet diaper 1 can be secured due to the contractile forces of the elastic members 40 even when the elastic members 13 are cut due to strenuous movement or the like of a pet, for example.

In the embodiments illustrated in FIG. 1 , the elastic members 40 extend in the entire area of the main body 2 in the longitudinal direction Y. Therefore, the elastic members 40 overlap a region extending in the lateral direction X from a region between the tail hole 70 and the absorbent core 30. According to this constitution, due to contraction of the elastic members 40, a region between the edge 70F of the tail hole 70 on the ventral side and the edge 30R of the absorbent core 30 on the dorsal side in the main body 2 is pulled to the absorbent core 30 side and is pressed against the rump of a pet. Accordingly, fitting properties between the main body 2 and the rump of a pet are improved, and thus a gap is unlikely to be formed between the main body 2 and the rump of a pet. As a result, feces are unlikely to enter the inside of the pet diaper 1, and thus feces are unlikely to adhere to a pet.

Particularly, in the pet diaper 1, since the absorbent core 30 is not disposed in regions of the tail hole 70 and the absorbent core 30 in the main body 2, rigidities in these regions are reduced as much as that of the absorbent core 30. Therefore, since the regions of the tail hole and the absorbent core 30 are flexibly deformed along the rump of a pet, a gap is less likely to be formed between the main body 2 and the rump of a pet.

The elastic members 40 may not extend in the entire area of the main body 2 in the longitudinal direction Y. For example, as illustrated in FIG. 6 , the elastic members 40 need only extend between at least the edge 70F of the tail hole 70 on the ventral side and the edge 30R of the absorbent core 30 on the dorsal side in the longitudinal direction Y. If the elastic members extend between at least the edge 70F of the tail hole 70 on the ventral side and the edge 30R of the absorbent core 30 on the dorsal side, since a region between the tail hole 70 and the absorbent core 30 in the main body 2 is pulled to the absorbent core 30 side due to the contractile forces of the elastic members 40, it is possible to prevent a gap from being likely to be formed between the main body 2 and the rump of a pet.

In one or more embodiments, the elastic members 40 may extend over a center position of the tail hole 70 in the longitudinal direction Y. For example, in the embodiments illustrated in FIG. 7 , in the longitudinal direction Y, edges 40R of the elastic members 40 on the dorsal side are disposed between the edge 70R of the tail hole 70 on the dorsal side and the center position of the tail hole 70, and edges 40F of the elastic members 40 on the ventral side are disposed at positions which coincide with the edge 30R of the absorbent core 30 on the dorsal side. In the above embodiments, since a region on the outward side of the tail hole 70 in the lateral direction X is pressed against the rump of a pet due to contraction of the elastic members 40, a gap is unlikely to be formed between the side edge 70S of the tail hole 70 in the lateral direction X and the rump of a pet.

In one or more embodiments, the elastic members 40 may extend over in the edge 70R of the tail hole 70 on the dorsal side in the longitudinal direction. For example, in the embodiments illustrated in FIG. 8 , in the longitudinal direction Y, the edges 40R of the elastic members 40 on the dorsal side are disposed between the edge 70R of the tail hole 70 on the dorsal side and the target portion 45, and the edges 40F of the elastic members 40 on the ventral side are disposed at positions which coincide with the edge 30R of the absorbent core 30 on the dorsal side in the longitudinal direction Y. In the above embodiments, since a region in the main body 2 on the dorsal side of the tail hole 70 is pressed against the dorsal portion of a pet due to contraction of the elastic members 40, fitting properties of the pet diaper 1 are improved.

In one or more embodiments, when a virtual tail hole 75 is set at a position line-symmetrical to the tail hole 70 with respect to the center line CL2 in the longitudinal direction Y, the elastic members 40 may extend over an edge 75F of the virtual tail hole 75 on the ventral side. For example, in the embodiments illustrated in FIG. 9 , the edges 40R of the elastic members 40 on the dorsal side are disposed at positions which coincide with the edge 70F of the tail hole 70 on the ventral side in the longitudinal direction Y, and the edges 40F of the elastic members 40 on the ventral side are disposed between the edge 75F of the virtual tail hole 75 on the ventral side and the fastening tabs 90 in the longitudinal direction Y. In the above embodiments, since the elastic member 40 extends to the ventral side over the center line CL2, a region in the main body 2 on the ventral side is pressed against the ventral portion of a pet due to contraction of the elastic members 40, and thus fitting properties of the pet diaper 1 are improved.

In one or more embodiments, the elastic members 40 may extend over the edges 90R of the pair of fastening tabs 90 on the dorsal side in the longitudinal direction Y. For example, in the embodiments illustrated in FIG. 10 , the edges 40R of the elastic members 40 on the dorsal side are disposed at positions which coincide with the edge 70F of the tail hole 70 on the ventral side in the longitudinal direction Y, and the edges 40F of the elastic members 40 on the ventral side are disposed between the edges 90R of the fastening tabs 90 on the dorsal side in the longitudinal direction Y and edges 90F of the fastening tabs 90 on the ventral side. In the above embodiments, since the elastic members 40 extend over the edges 90R of the pair of fastening tabs 90 on the dorsal side, the elastic members 40 are stretched to the ventral side due to tensile forces pulling up the pair of fastening tabs 90 for engagement with the target portion 45, and the main body 2 is pressed against the rump of a pet due to the contractile forces of the elastic members 40. Therefore, fitting properties of the pet diaper 1 are improved.

In one or more embodiments, the elastic members 40 may extend over the edge 45F of the target portion 45 on the ventral side in the longitudinal direction. For example, in the embodiments illustrated in FIG. 11 , the edges 40R of the elastic members 40 on the dorsal side are disposed between the edge 45F of the target portion 45 on the ventral side and an edge 45R of the target portion 45 on the dorsal side in the longitudinal direction Y, and the edges 40F of the elastic members 40 on the ventral side are disposed at positions which coincide with the edge of the absorbent core 30 on the dorsal side. Generally, a pet such as a dog or a cat adopts a posture with a protruding rump and a rounded dorsal portion at the time of defecation. In the above embodiments, since the elastic members 40 extend over the edge 45F of the target portion on the ventral side, the elastic members 40 are stretched when a pet has the rounded dorsal portion at the time of defecation, and the main body 2 is pressed against the dorsal portion of a pet due to the contractile forces of the elastic members 40. Therefore, fitting properties of the pet diaper 1 are improved.

In one or more embodiments, the elastic members 40 may extend over an edge 93F of the waist gather 93 on the dorsal side. For example, in the embodiments illustrated in FIG. 12 , the edges 40R of the elastic members 40 on the dorsal side are disposed at positions which coincide with the edge 70F of the tail hole 70 on the ventral side, and the edges 40F of the elastic members 40 on the ventral side are disposed between the waist gather 93 and the ventral side edge 2F in the longitudinal direction Y. Since the elastic members 40 extend over the edge 93F of the waist gather 93 on the dorsal side, the elastic members 40 are stretched to the ventral side due to contraction of the waist gather. For this reason, the main body 2 is pressed against the ventral portion of a pet due to contraction of the elastic members 40, and thus fitting properties of the pet diaper 1 are improved.

In the embodiments illustrated in FIG. 1 , the edge 70F of the tail hole 70 on the ventral side is disposed on the dorsal side from the center line CL2 of the main body 2 in the longitudinal direction Y. However, in the above embodiments, the edge 70F of the tail hole 70 on the ventral side may be disposed on the ventral side from the center line CL2 of the main body 2 in the longitudinal direction Y. For example, in the embodiments illustrated in FIG. 13 , the edge 70R of the tail hole 70 on the dorsal side is disposed on the dorsal side from the center line CL2, and the edge 70F of the tail hole 70 on the ventral side is disposed on the ventral side from the center line CL2. Since the tail hole 70 is disposed substantially in a horizontal manner when a pet adopts a sitting posture by setting the position of the tail hole 70 in this manner, feces can more reliably pass therethrough.

FIG. 3 is a view illustrating a state where the pet diaper 1 is worn by a pet. When the pet diaper 1 is worn by a pet, first, the anus 98 of the pet is exposed from the tail hole 70 by causing the tail of the pet to pass through the tail hole 70 and come out to the rear surface side Z2 of the diaper. At this time, the tongue piece 72 is folded back to the rear surface side Z2 with the base end portion 72R as a starting point, and therefore the tongue piece 72 abuts the dorsal surface side of the tail. Next, the ventral side edge 2F of the main body 2 is brought into contact with the abdomen of the pet. Further, while a part in the vicinity of the center line CL2 of the main body 2 in the longitudinal direction Y is brought into contact with the urination opening of the pet, the dorsal side edge 2R of the main body 2 is brought into contact with the dorsal portion of the pet. Next, the pair of fastening tabs 90 are pulled to the back side of the pet in the girth direction, and the pair of fastening tabs 90 are interlocked with an outer surface of the target portion 45 of the main body 2. Accordingly, as illustrated in FIG. 3 , the pet diaper 1 is worn such that the abdomen, the back, and the crotch of the pet are covered.

As described above, in the pet diaper 1 according to the embodiments described above, since the anus 98 of a pet is exposed from the tail hole 70 of the main body 2 by the tail hole 70, while urine of the pet is received by the pet diaper 1, feces of the pet can pass through the tail hole 70 and be discharged to the outside. Particularly, in the pet diaper 1, since the tail hole 70 has a longitudinally elongated shape, when the pet diaper 1 is worn by a pet, the anus 98 of the pet can be reliably exposed from the main body 2. In addition, by disposing the edge 70R of the tail hole 70 on the dorsal side on the ventral side from the middle point MP between the center line CL2 of the main body 2 and the edge 45F of the target portion 45 on the ventral side in the longitudinal direction Y, when the pet diaper 1 is worn, the edge 70R of the tail hole 70 on the dorsal side can reliably abut the dorsal portion of the tail. Therefore, displacement of the pet diaper 1 is suppressed, and feces can be discharged to the outside of the pet diaper 1 while leakage of urine is prevented. In the pet diaper 1, a feces bag for collecting feces discharged from the tail hole 70 is not attached.

Incidentally, if a gap is present between the edge of the tail hole 70 and the rump of a pet, there is concern that feces may enter the inside of the pet diaper 1 through the gap and adhere to the pet. Particularly, in a case of loose feces, when a slight gap is simply present between the edge of the tail hole 70 and the rump of a pet, the loose feces may enter the inside of the pet diaper 1 through the gap and spread inside the pet diaper 1. In this case, it takes time and effort to wash away feces which have spread and adhered to the pet using a shower or the like. In contrast, in the pet diaper 1, since a region between the tail hole 70 and the absorbent core 30 in the main body 2 is pressed against the rump of a pet due to contraction of the elastic members 40, a gap is unlikely to be formed between the edge of the tail hole 70 and the rump of a pet. Therefore, a situation in which feces enter the inside of the pet diaper 1 through the gap and the feces adhere to a pet is suppressed.

Hereinabove, pet diapers according to various embodiments have been described, but the present invention is not limited to the embodiments described above and various modification forms can be constituted within a range not changing the gist of the invention. That is, it should be noted that the embodiments described above are for exemplary description and are not intended to limit the scope of the present invention. The various embodiments described above can be combined within a range having no contradiction.

Although the disclosure has been described with respect to only a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that various other embodiments may be devised without departing from the scope of the present disclosure. Accordingly, the scope of the invention should be limited only by the attached claims.

REFERENCE SIGNS LIST

-   -   1 Pet diaper     -   2 Main body     -   2S Side edge     -   10 Top sheet     -   13 Elastic member     -   20 Back sheet     -   30 Absorbent core     -   40 Elastic member     -   45 Target portion     -   70 Tail hole     -   72 Tongue piece     -   72F Distal end portion     -   72R Base end portion     -   80 Leakproof gather     -   81 Standing portion     -   83 Vertical fixed portion     -   90 Fastening tab     -   98 Anus     -   CL1, CL2 Center line     -   MP Middle point     -   W1, W2 Largest opening width 

What is claimed is:
 1. A pet diaper extending in a lateral direction along a waist of a pet and in a longitudinal direction from a ventral side to a dorsal side of the pet, the lateral direction being orthogonal to the longitudinal direction, and the pet diaper comprising: a main body including: an absorbent core; and a tail hole having a longitudinally elongated shape with a largest opening width in the longitudinal direction that is larger than a largest opening width in the lateral direction; a pair of fastening tabs, disposed closer to the ventral side than is the tail hole, that extend outward from a lateral side edge of the main body; and a target portion, disposed closer to the dorsal side than is the tail hole, that engages with the pair of fastening tabs, wherein a dorsal side edge of the tail hole is disposed closer to the ventral side than is a middle point between a center line of the main body in the longitudinal direction and a ventral side edge of the target portion.
 2. The pet diaper according to claim 1, wherein the largest opening width of the tail hole in the longitudinal direction is larger than a distance between a ventral side edge of the tail hole and the center line.
 3. The pet diaper according to claim 1, wherein the largest opening width of the tail hole in the longitudinal direction is larger than a distance between the dorsal side edge of the tail hole and the middle point.
 4. The pet diaper according to claim 1, wherein a distance between a ventral side edge of the tail hole and the center line is shorter than a distance in the longitudinal direction between the dorsal side edge of the tail hole and the middle point.
 5. The pet diaper according to claim 1, wherein a ventral side edge of the tail hole is disposed closer to the ventral side than is the center line.
 6. The pet diaper according to claim 1, wherein the main body further includes a tongue piece configured to cover or uncover the tail hole, the tongue piece includes: a base end portion coupled to the dorsal side edge of the tail hole, and a distal end portion opposite to the base end portion, wherein the tongue piece uncovers the tail hole when folded back with the base end portion as a fold line, and the distal end portion of the tongue piece is directed to the ventral side or in the lateral direction when the tongue piece is not folded back.
 7. The pet diaper according to claim 1, wherein the tail hole is formed by cutting out a part of the main body.
 8. The pet diaper according to claim 1, wherein a dorsal side edge of the absorbent core is disposed closer to the ventral side than is a ventral side edge of the tail hole.
 9. The pet diaper according to claim 1, wherein a distance between a ventral side edge of the tail hole and the dorsal side edge of the absorbent core is shorter than a distance between the dorsal side edge of the absorbent core and the center line.
 10. The pet diaper according to claim 1, further comprising: a first elastic string attached to the main body in a stretched state and extending at least from a ventral side edge of the tail hole to an dorsal side edge of the absorbent core in the longitudinal direction.
 11. The pet diaper according to claim 10 further comprising: a leakproof gather disposed at a position outside the absorbent core in the lateral direction, wherein the first elastic string is disposed at a position outside the leakproof gather in the lateral direction.
 12. The pet diaper according to claim 11, wherein the leakproof gather comprises: a second elastic string that extends in the longitudinal direction; a standing portion that stands upright by contraction of the second elastic string; and a vertical fixed portion that serves as a standing fulcrum of the standing portion in the longitudinal direction, and the vertical fixed portion is fixed to the main body at a position between the ventral side edge of the tail hole and the dorsal side edge of the absorbent core.
 13. The pet diaper according to claim 1, wherein an opening width of the tail hole in the lateral direction continuously narrows toward the ventral side. 